Stool for service counters



Aug. 14, 1928.

J. S. WALTON STOOL FOR SERVICE COUNTERS Filed May 27, 1926 J. 5.Waltom INVENTOR.

BY f

A TTORNEY Patented Aug. 14, 1928.

PATENT OFFICE.

JOQEPH S. WALTON, LOS ANGELES, CALIFORNIA. V

. swoon non snav'xcn COUNTERS,

A ti illcation filed May This invention relates to improvements in stools of the type provided for patrons of.

servingcounters and its object is to provide a device which will permit of such hunted I rotary motion of the stool seatandjback as will permit thelatter tohe swungto a posi tion permittinga personto easilyland conveniently occupy or leave the stool without .whindrance from the counter and which when 1 thestool is unoccupied will return, the seat to and maintain it in apreferredposition.

A further object is the provision of. a

a spring device for efiecting the return movement of theseat wherein the tension of the.

spring ma be varied and the looseness between the aring faces due to wear incident to prolonged use may be taken up, themeans. nsating for [wear and the means for com d for varying the tension of the spring mutuan ally co-actlng with each other to maintain,

both means, in the desired adjusted position.

Asfurther object is the provisionof a de-@ vice for use in connection :with stools where-= .in the parts are compactly assembled and, capable of convenient readjustment, period-.

ically asthe extent of use to'which the de -f vice is subjected may reniuire. ,Inthe accompanying rawingwwherein a approved embodiment of the invention is illustrated.

Fig.1 is a side elevation of the device, the

stool pedestal, seat; and back being shown in dotted lines. a i 1 i the deviceonan enlarged scale. c i. a Fig; dis asec 'on on the line 3--3. of

igs 4 and dare s' rangements of the springfland, I i

Fig. 6 isv a top plan'viewaof the device. 4 Referring to the drawi in detail the numeral 8 indicates a hdllow .-.cylindrical .spindle thebore 9 ofwhich is reduced in" diameter at the lower end and threaded :as-

indicated at 10.. The upper extremity of the spindle is provided with a flat disc-like head 11 overlying the hub or central portion 12 of a spider 13 through which the spindle Fig. 2 is a vertical sectional view through 27,-1e2e. -Serial No. 112,160.

looseness between the parts as will be hereinafter more fully 1 described. I

The head 11 is provided with a radial projection 15 engageable with a lug 16 provided internally of the hub 12 for limiting. therotaryl motion of thespider 13 with respectv to t e spindle 8. a

it sleeve 17 is rotatably fitted on the spindle 8 and, engaging the underside of the hub 12, coactswith the head 11 of the spindle to limit the axial thrust of the spindle in the spider hub. The lower extremity of the sleeve 17 is provided with a flange 18 in the underside of which are formed a series of radial grooves :19. The portion of the hollow spindle 8 adjacent the flange 18 is provided witha diametrical slot 7 20 receiving a key 21. The length of thejslot 20 is such as to permit 'movement of the key 21 axially of the spindle 8 and the Iopa posite extremities of the key are selectively engageable with the grooves 19 in the sleeve flange 18, according to the angular adjustment of the sleeve and spindle. The medial portionof the key 21 is enlarged and providedcentrallywith a tapered recess 'receiv ing the correspondingly shaped upper ex tremity of an adjusting screw 23 fitted in'the threaded portion 10 of the spindle bore. Adjustment 'ofithe screwis facilitated by a 3 head 24 and it is maintained in adjusted position by a lock nut 25* By proper ad-' 1 {)ustment of the' screw 23 the key 21 may e moved" axially of. the spindle 8 moving therewith the sleeve 17 which, coacting withthe spindle head 11 takes up loose movement a l V a a between the spider hub and spindle.

ilar sections onthe a line H of Fig. 2ishowingdifierentf ar-z Aareversible coil spring 27 is arranged about the sleeve 17 under the hub 12 and its outer extremity turned inwardly to provide an inturned hook 28 selectively engageable with pins 29and 30 fii ed in the hub12. At a point on the hub 12 opposite the pins 29.and30 is provided a confining lug 31 forspring is provided with an aperture receiving a pin 32 struck out from the material I of the sleeve 17. I l. Inuse the spindle 8 is" secured in a posi tion'inthe upper extremity of. the stool pedestal 33 by a clamping screw 34, as indicated by dotted lines in Fig. 1 and the stool seat and back 35 and 36, respectively, are attached in a suitable manner to the arms of the spider 13. By a preliminary adjustment the spring The inner extremity-of the 1 seatand' backmay be so adjusted "as to normally maintain a preferred position with re-' spect to a serving counter, table or the like (not shown). The spring .27 is tensioned to the desired extent by moving the screw 23 downwardly, withdrawing "the key 21' from the slot 20 and turning the sleeve 17 relative to the spindle 8 whereupon theakey is replaced and engaging in the grooves 19 maintains the ad usted angular POSIt IO'II Of the sleeve andspindle. The. screw 23 issnbsequently advanced and entering the recess, 22 prevents accidental displacement or loss of the 'key and, as the axial movement of the screw is continued the key and sleeve are advanced until the head 11 of th'e spindle and the adjacent extremity of the sleeve exertia degree of pressure on the washer lt requlsite' to prevent relative loosemovement' of the parts. Iv

As shown iniFig i the spring 27 is soarranged with respect tothe sleeve 17 asf-to norinallyf turn the hub 12 in'one direction but by removingthe key 21 and the sleeve 17, the spring Q'T nay be removed and replaced in -the reverse'position as illustrated in-Fig. 5 whereby its tension is so exerted asto turn the hub 11] the opposite direction,

theesleeve and keyzbeing subse'uently replaced and the spring tension'ed described. w 1

1. In-combination, spindle having a head at one end, asleeve movable axially on saidspindle. a hubrotatable on said spindle intermediatethe sleeve and head, means for securing the sleeve in various angular and subject to tensionivariations incident-to the. varying angular adjustments} of the sleeve and spindle, and means coactingwith the sleeve securing means to displace the sleeveaxially of ,the' spindle whereby to compensate for loose movement between'kthe" spindle and hubby 7 .1 2. In;combination,-saspindle, a spider hub rotatable on saidspindle, and a flat reversible convolute-lspring having one of its'ends econnectedgto the spindle and its other end connected to the spider huh, said spring adapted, according to its position, to" normally tend to rotatethe h'ubyin one direction orthe other with respect to the spindle.

interposed between the head andspider, said spindle being provided with a transverse 4. In a chair, a spindle, a spider hub r0 tatable onsaid spindle, a sleeve surrounding the spindle, a spring connecting the sleeve and spider, and adapted to turn the spider to a predetermined position, said spindle be I ing provided with a' transverse slot, teeth arranged on said sleeve, a key extending through the slot and engaging said teeth, said key being movable in thedirectionof the axis-of the spindle, and meansfor inovingsaid ke toward-the head of thespindle,

whereby tie sleeve is forced toward the spider.

5. In a chair, a base, aspider rotatably 'ingon the latter,a' sleeve rotatably mounted ing the sleeve in various positions, said sition, to normally tend to rotate the spider thes indlee a r e a 6. n a chair, a base, a spider rotatably V V inone directionor'the other with respect to positions with. respect to thekspindley spring connected'with the sleeve and the hub mounted on the base, a spindle extending" through the spider and having a llQZtCll'Qf-lhe on'the spindle, a fiat reversible eonvolute coiled spring 4 surrounding the spindle and having one ofitsgends detachably connected to t-hesleeve, and its other end detachably j connected to thespider, and means for lockmounted on the base, a spindle extending [throughthe spiderand havin ahead resting on the latter, a yielding tirust member 1 spindle being provided with atransve'rse slot and a threaded bore',*a* sleeve rotatable on the spindle, a reversible coiled spring: t

interposed between thehead and spider, said having one ofits endsdetarhably connecte 'to the sleeve, and.'itsother end detachably 7 connected to thespider, teeth provided on said sleeve, a key extending through the slot of the spindle and' engaging said teeth, and

a screw arranged in the threaded bore" of the spindle and engaging said key for forcing the latter against the teeth,and for forcing the sleevetow ard said head to takeup wear on the yielding thrust member.

In testimony whereof Ifhereunto aflix my signature.

- JOSEPH: s. wAn on: 

